Toy building brick



FIG. 1 is a top isometric view of a toy building brick showing a top side, a front side and a left side of my new design;

FIG. 2 is a bottom isometric view showing a bottom side, a rear side and a right side of the toy building brick;

FIG. 3 is a bottom isometric view showing the bottom side, the front side and the left side of the toy building brick;

FIG. 4 is a top view of the toy building brick;

FIG. 5 is a bottom view of the toy building brick;

FIG. 6 is a right side view of the toy building brick;

FIG. 7 is a cross-sectional view of the toy building brick taken along line 7-7 of FIG. 5; and,

FIG. 8 is a cross-sectional view of the toy building brick taken along line 8-8 of FIG. 5. 

CLAIM The ornamental design for a toy building brick, as shown and described. 